Civita Symbol

Some articles on civita symbol, symbols:

Levi-Civita Symbol - Definition - Three Dimensions
... In three dimensions, the Levi-Civita symbol is defined as follows i.e ... Roger Penrose) use the distinct symbols and to emphasize that they are not directly related by index raising or lowering operations ... The formula for the three-dimensional Levi-Civita symbol is which is a product of differences in the indices where each difference corresponds to a cyclic ...

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    The glance is natural magic. The mysterious communication established across a house between two entire strangers, moves all the springs of wonder. The communication by the glance is in the greatest part not subject to the control of the will. It is the bodily symbol of identity with nature. We look into the eyes to know if this other form is another self, and the eyes will not lie, but make a faithful confession what inhabitant is there.
    Ralph Waldo Emerson (1803–1882)